<template>
    <i v-if="isShowIconSvg" class="el-icon" :style="setIconSvgStyle">
        <component :is="getIconName" />
    </i>
    <div v-else-if="isShowIconImg" :style="setIconImgOutStyle">
        <img :src="getIconName" :style="setIconSvgInsStyle" />
    </div>
    <i v-else :class="getIconName" :style="setIconSvgStyle" />
</template>

<script lang="ts">
import { computed, defineComponent } from "vue";

export default defineComponent({
    name: "svgIcon",
    props: {
        // svg 图标组件名字
        name: {
            type: String,
        },
        // svg 大小
        size: {
            type: Number,
            default: () => 14,
        },
        // svg 颜色
        color: {
            type: String,
        },
    },
    setup(props) {
        // 在线链接、本地引入地址前缀
        const linesString = ["https", "http", "/src", "/assets"];

        // 获取 icon 图标名称
        const getIconName = computed(() => {
            return props?.name;
        });
        // 用于判断 element plus 自带 svg 图标的显示、隐藏
        const isShowIconSvg = computed(() => {
            return props?.name?.startsWith("ele-");
        });
        // 用于判断在线链接、本地引入等图标显示、隐藏
        const isShowIconImg = computed(() => {
            return linesString.find(str => props.name?.startsWith(str));
        });
        // 设置图标样式
        const setIconSvgStyle = computed(() => {
            return `font-size: ${props.size}px;color: ${props.color};`;
        });
        // 设置图片样式
        const setIconImgOutStyle = computed(() => {
            return `width: ${props.size}px;height: ${props.size}px;display: inline-block;overflow: hidden;`;
        });
        // 设置图片样式
        // https://gitee.com/lyt-top/vue-next-admin/issues/I59ND0
        const setIconSvgInsStyle = computed(() => {
            const filterStyle: string[] = [];
            const compatibles: string[] = ["-webkit", "-ms", "-o", "-moz"];
            compatibles.forEach(j => filterStyle.push(`${j}-filter: drop-shadow(${props.color} 30px 0);`));
            return `width: ${props.size}px;height: ${props.size}px;position: relative;left: -${props.size}px;${filterStyle.join("")}`;
        });
        return {
            getIconName,
            isShowIconSvg,
            isShowIconImg,
            setIconSvgStyle,
            setIconImgOutStyle,
            setIconSvgInsStyle,
        };
    },
});
</script>
